RE: [PATCH V4 05/10] Tools: hv: Add an example script to retrievedhcp state

From: KY Srinivasan
Date: Tue Sep 04 2012 - 19:40:18 EST




> -----Original Message-----
> From: Greg KH [mailto:gregkh@xxxxxxxxxxxxxxxxxxx]
> Sent: Tuesday, September 04, 2012 6:59 PM
> To: KY Srinivasan
> Cc: linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx;
> apw@xxxxxxxxxxxxx; ben@xxxxxxxxxxxxxxx; thozza@xxxxxxxxxx;
> dcbw@xxxxxxxxxx
> Subject: Re: [PATCH V4 05/10] Tools: hv: Add an example script to retrieve dhcp
> state
>
> On Tue, Sep 04, 2012 at 02:46:37PM -0700, K. Y. Srinivasan wrote:
> > To keep the KVP daemon code free of distro specific details, we invoke an
> > external script to retrieve the DHCP state. This is an example script that
> > was used to test the KVP code. This script has to be implemented in a Distro
> > specific fashion. For instance on distros that ship with Network Manager
> enabled,
> > this script can be based on NM APIs.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> > Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
> > ---
> > tools/hv/hv_get_dhcp_info.sh | 25 +++++++++++++++++++++++++
> > 1 files changed, 25 insertions(+), 0 deletions(-)
> > create mode 100755 tools/hv/hv_get_dhcp_info.sh
> >
> > diff --git a/tools/hv/hv_get_dhcp_info.sh b/tools/hv/hv_get_dhcp_info.sh
> > new file mode 100755
> > index 0000000..3de4587
> > --- /dev/null
> > +++ b/tools/hv/hv_get_dhcp_info.sh
> > @@ -0,0 +1,25 @@
> > +#!/bin/bash
> > +
> > +# This example script retrieves the DHCP state of a given interface.
> > +# In the interest of keeping the KVP daemon code free of distro specific
> > +# information; the kvp daemon code invokes this external script to gather
> > +# DHCP setting for the specific interface.
> > +#
> > +# Input: Name of the interface
> > +#
> > +# Output: The script prints the string "Enabled" to stdout to indicate
> > +# that DHCP is enabled on the interface.
>
> What happens if DHCP is not enabled on the interface? Shouldn't that
> also return something other than "success"?

The script is expected to write "Enabled" to stdout to indicate if DHCP is enabled; if this
is not the case, implicitly we assume DHCP is not enabled (since this is a binary state).

Regards,

K. Y



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